Issued Patents All Time
Showing 26–50 of 55 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7729666 | Communication system and method of dynamic space-frequency-division multiple-access for uplink from terminals to base-station | Zhan Zhang | 2010-06-01 |
| 7710977 | Allocation of radio resources to packets in accordance with service qualities under radio communication environment | Daisuke Kitazawa, Lan Chen, Narumi Umeda | 2010-05-04 |
| 7634272 | Mobile station, mobile communication system, and cell selection method | Takeshi Yamashita, Hideo Matsuki, Jyunichirou Hagiwara, Narumi Umeda | 2009-12-15 |
| 7590085 | Mobile communication system, line concentrator, radio base station, mobile station, and communication method | Masayuki Motegi, Hideki Tobe, Narumi Umeda | 2009-09-15 |
| 7580387 | Time slot assigning method, signal transmission method, base station control apparatus, base station, and mobile station used in a mobile communications system | Lan Chen, Narumi Umeda | 2009-08-25 |
| 7570684 | Method for joint time synchronization and frequency offset estimation in OFDM system and apparatus of the same | Zhongshan Zhang | 2009-08-04 |
| 7548519 | Mobile communication system, mobile communication method, mobile terminal and base station | Masayuki Motegi, Narumi Umeda | 2009-06-16 |
| 7532601 | Transmission power control method, radio communication system, base station and mobile station | Lan Chen, Narumi Umeda | 2009-05-12 |
| 7532572 | Packet communications system, base station and mobile station | Lan Chen, Daisuke Kitazawa, Narumi Umeda | 2009-05-12 |
| 7496067 | Resource allocating method, and base station, mobile station, and radio packet communication system to which the resource allocating method is applied | Heng Qiu, Narumi Umeda | 2009-02-24 |
| 7483710 | Transmission power control method, communication device, and radio communication system | Daisuke Kitazawa, Lan Chen, Narumi Umeda | 2009-01-27 |
| 7471927 | Packet communication system, packet communication method, base station, mobile station, controller and packet communication program | Lan Chen, Daisuke Kitazawa, Narumi Umeda | 2008-12-30 |
| 7457622 | Radio base station selection method and system and a radio base station in a mobile communication system | Lan Chen, Narumi Umeda | 2008-11-25 |
| 7453841 | Scramble code allocation method, a radio base station, a mobile station, and a mobile communications system | Masayuki Motegi, Takeshi Yamashita, Narumi Umeda | 2008-11-18 |
| 7417963 | Resource control system, resource control method, and base station and mobile station suitable for use in the same | Lan Chen, Narumi Umeda | 2008-08-26 |
| 7394785 | Mobile communication system, radio base station, mobile station, channel transmission control method, and channel transmission control program | Masayuki Motegi, Hideki Tobe, Narumi Umeda | 2008-07-01 |
| 7366130 | Base station and transmission power determining method in mobile communications systems | Heng Qiu, Narumi Umeda | 2008-04-29 |
| 7359349 | Base station, radio resource control equipment, mobile station, communication system, and communication method | Lan Chen, Narumi Umeda | 2008-04-15 |
| 7308282 | Communication control system, communication control method, base station and mobile station | Lan Chen, Narumi Umeda | 2007-12-11 |
| 7292863 | Admission control method and device in mobile communication system | Lan Chen, Narumi Umeda | 2007-11-06 |
| 7239619 | Mobile communication system, base station, mobile station, and cell control method | Hideki Tobe, Narumi Umeda | 2007-07-03 |
| 7218950 | Base station, mobile station, communication system, transmission control method, and mobile station control program | Heng Qiu, Jyunichirou Hagiwara, Narumi Umeda | 2007-05-15 |
| 7184709 | Radio packet communication system, radio packet communication method, base station and mobile station | Heng Qiu, Narumi Umeda | 2007-02-27 |
| 7117003 | Communications control system, communications control method, and mobile station and base station for use therein | Narumi Umeda | 2006-10-03 |
| 7110767 | Packet based mobile communications system with multicast paging of standby mobiles | Masayuki Motegi, Narumi Umeda | 2006-09-19 |